Patent · US Expired

Valve for regulating fluids

US6729600B2 · kind B2 · utility

34Cited by

3References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Patrick Mattes · Stuttgart, DE
Wolfgang Stoecklein · Stuttgart, DE
Dietmar Schmieder · Markgröningen, DE

Key dates

Filing date	Aug 12, 2002
Grant date	May 4, 2004
Priority date	—
Expiry date	Nov 14, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/703
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve for regulating fluids includes a piezo-electric actor unit (9) for operating a valve member assembly. The valve member assembly has at least one first piston (13) guided in a valve body (10) and a second piston (14). A hydraulic chamber, acting as a hydraulic converter, is disposed between the first and second pistons (13, 14). The second piston operates a valve-closing member (15) disposed on an end facing away from the hydraulic chamber (16). The valve closing member (15) cooperates with at least one valve seat (17) formed on the valve body (10) and in a closed position, separates a system pressure region (18) of the valve (1) from a high pressure region (5). The second piston (14) is surrounded by and supported by an approximately casing-type spacer (22) on the valve body (10).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.